The Kuznetsov (Turonian-Lower Coniacian), Lower Berezov (Middle Coniacian-Santonian), Upper Berezov (Campanian), and Gankino (Upper Campa-nian-Maastrichtian) seismic complexes are part of the Upper Cretaceous (except Ce-nomanian) deposits in Western Siberia. These seismic complexes are located from the bottomup, and each of them is of interest as a potential oil and gas bearing horizon. This article represents the conceptual structure and short stratigraphic and lithofacial characteristics of all four seismic complexes. Within identified oil and gas bearing horizons we have mapped the reservoir distribution limits due to either reser-voir claying or regional cap rock sanding. In addition, we have constructed the structure maps of the seismic complexes based on regional seismic works and well data. The detailed structure model has allowed updating the contours of the previously identified positive structures, and identifying the new prospective structures in the Kuznetsov formation, Lower Berezov and Upper Berezov subformations, and Gankino formation. The study of the cryolithic zone and the gas hydrates formation conditions within the territory of Western Siberia has enabled the gas hydrate stability zones mapping. We have accomplished the assessment of the resources for all discovered prospective structures.

For the productive formation of Achimov sequence texture features have been studied, which have a significant impact on the oil saturation of reservoir rocks depending on the changes of height above oil-water contact. It is noted that if the height of the interlayer above the surface of oil-water contact decreases, the boundary value of the permeability for the oil saturation of interlayers increases. The obtained conclusion can be used to justify the reduction of oil saturated thicknesses in the intervals close to the oil-water contact or to determine the oil sa-turated thicknesses of layered reservoirs. The result of this work is a digital three-dimensional geological model of the Ach6 reservoir at the Imilorskoye oil field. This geological model includes not only a detailed lithology differentiation of the section, taking into account the noncollector rocks, but also a model of oil saturation, built on changing under the influence of the height of the reservoir over the oil-water contact conditioned values of permeability of reservoir rocks responsible for their "spotty" saturation. The proposed approach makes it possible to achieve the current water cut for this reservoir of 55 % without adjusting the relative phase permeability at the actual well data on average 56 %.

The article presents the main aspects of the laying of the parametric Kurgan-Uspenskaya-1 well. We briefly have covered the main results of research and testing of promising horizons exposed by the well. In addition, we have made conclusions and proposals for continuing the prospecting for oil and gas in Kurgan region. The data obtained during the drilling of a parametric well provide a basis for revising the tectonics in the eastern part of Kurgan region and the geological structure of the pre-Jurassic basement.

The chemical composition of reservoir water in the Mesozoic hydrogeological basin is closely related to the conditions of sedimentation, tectonic development, and formation of hydrocarbon deposits. This water composition in combination with other geological parameters makes it possible to predict the presence of industrial accumulations at oil and gas fields. Investigated groundwater plays an important role in the operation of oil and gas fields in the territory of the Yamalo-Nenets oil and gas producing region.

Nine oil and gas fields have been discovered in district Severnoye of Novosibirsk region. The Verh-Tarskoe oil field is the largest of them. Its exploitation was most intensive in 2004–2011. As a result of super-intensive methods of development, the "health" of the Verh-Tarskoe oil field had been destroyed, and the output of oil began to fall rapidly. Nonetheless, the district has a unique diversity of geological factors. There is oil in the Jurassic sandstones (the Verh-Tarskoe oil field), in the Paleozoic carbonates (the Maloichskoe oil field), and even in Mezhovsky granites. The author of the article considers this district to be a most promising object for geological and geophysical studies and field observations as well as for testing innovative technologies in the wide range of oil and gas production. With the assistance of state authorities and oil companies, this district may become an international testing-site for solving many scientific and technological issues in association with the SB RAS research institutes.

Radical reactions are traditional objects of research in various fields of chemical kinetics for many decades; this is evidenced by works of academic A. L. Buchachenko [1–4]. On the example of these reactions the general regularities of chemical compounds transformation are found and explained. At the same time, the transformations of dispersed organic matter and hydrocarbon are the basis of oil and gas generation processes and are key in industrial oil and gas processing. These reasons make it very important to establish the mechanisms of transformation of organic matter and its transformation products in the development of processes in various external conditions. As a result of innovative researches by I. I. Nesterov [5–9], it can be considered reliably established that the transformation processes of dispersed organic matter proceed by a discrete radical-chain mechanism. The fragmentation of molecules with long chains of carbon atoms and ring molecules into smaller ones (cracking of hydrocarbons) is the basis of the conversion process of dispersed organic matter into hydrocarbons [10]. Over decades of research, the basic laws of these processes have been revealed, but some aspects of their mechanism and kinetics remain controversial. In this context, the aim of our study is to investigate the influence of wave fields to change the structure and composition of the hydrocarbons and oil NSOcompounds. Research methods are irradiation of crude oils and their fractions by a wave field with a constant frequency of 50 Hz and fixation by chromatographic methods of changing the fractional composition depending on the time of irradiation.

The article presents the results of the studies of the geochemical features of water-dissolved gases in the oil and gas bearing deposits in the southern areas of Ob-Irtysh interfluve. An increase in the total groundwater gas saturation with an increase in depth was established, from 0,1–0,5 l/l in the Aptian-Albian-Cenomanian water-bearing complex to 3,0–3,5 l/l in the Lower and Middle Jurassic one. Methane is the most widespread gas in the waters, its concentration in water increases with depth down to 2 000–2 200 m, and deeper its concentration decreases within the depth range 2 400–2 500 m. Here a peak of the concentrations of its homologues was revealed (C2H6; C3H8; iC4H10; nC4H10; iC5H12; nC5H12; iC6H14; nC6H14). This kind of the vertical zoning is connected with the distribution of the deposits of hydrocarbons. Within the depth range of 2 600–2 700 m, a peak of carbon dioxide concentrations was detected. In some areas, gases with anomalous CO2 concentrations (up to 96 %) are widespread. The concentrations of nitrogen and helium regularly decrease with depth.

At the present time monitoring of the technical condition of the downhole suckerrod pumping unit is not performed properly, and repairs are made only as a result of a significant decrease in the amount of produced fluid as a result of wear of the plunger pair, valves, etc., or an emergency stop of the ground drive as a result of breakdown of the gearbox, bearing supports, electric motor, etc. We have been developing station monitoring the state of the downhole sucker-rod pumping unit, which will allow diagnosing malfunctions at the stage of their occurrence, tracking their development, predicting the condition for the near future, planning the timing of maintenance and repair.

The gas dynamic studies are targeting at study of structure production and reservoir fluid, also their dynamics during the development processes reservoir, phase state of gas-condensate mixture, physical-chemical properties of hydrocarbons. Research results on the gas-condensate are using for estimation of gas and condensate reserves, development program scheduling and field facilities construction project, as well as to monitor and control the operation of the field. Observance of terms are recommending in the course of research, such as longstanding stabilization of the production conditions, differential pressure drawdown, carry over fluid phase with a gas current, conditions of separating and sampling, will improve accuracy prognosis main aspects and increase the efficiency of reservoir development.

The article deals with the studying of methods to improve the accuracy of process parameters in deep-well drilling. The algorithmic methods of increasing the accuracy of measuring the weight of drilling tool and the axial load on the bit, in particular, the method of standard measures and test methods are proposed. Methods are described for measuring the displacement of the drill string by the rotation angle of the pulley-block unit. A fundamentally new method of measuring the position of the upper end of the drill string by hydrostatic pressure and the method of measuring the mechanical speed of drilling are considered. The scheme of the automatic tracking system, which implements an integral method for measuring the drilling speed, characterized by high noise immunity, is presented.

Experimental research work were carried out on a pilot plant simulating a fractured porous reservoir to study the efficiency of using various compositions, which are pumped into productive layers during the work on enhancing oil recovery: polymer clay-quartz composition (PCQC), modified polymer-clay com-position (MPCC), a modified cross-linked polymer system (MCPS) and the classic modified polymer-dispersed composition (MPDC). There are marked criteria of the effectiveness on selective insulation work, namely: a reliable filling of the high conductivity channel (cracks) with the composition; no leakage of the composition from the crack; breakthrough of water through the crack filled with the composition; no penetration of the composition into the pore volume of the pilot plant. Taking into account these criteria, it was shown that the polymer clay-quartz com-position turned out to be the most effective composition for reliable clogging of high conductivity channels; the MCPS composition didn't show its effectiveness.

Today, the development of new technologies and their application in the oil industry is a key factor in improving the reliability of technological equipment. A promising method of technical diagnostics, described in the article, is intended to identify such defects and is relevant in the consideration of this issue. The data obtained indicate that it is possible not only to isolate the pulse of interest from the signal of the untreated vibration, but also to identify the type of damage in the early stages.  

During the construction and operation of underground pipelines, there is a need to develop projects for the engineering protection of insulation coatings from the mechanical effects of coarse soil. The task is most relevant with significant variability of the laying conditions along the length of the route. In particular, the difficult laying conditions include the passage of the route in the areas of distribution of rocky, gravelly and permafrost soils. The appropriateness of applying the methods of engineering protection of the insulation coating from mechanical stress should be justified both economically and in terms of technical and operational indicators. Therefore, the task of analyzing the conditions of support of the underground pipeline and the study of the created forces in the supporting part of the pipeline is very relevant and characterized by insufficient knowledge. The article analyzes the effect of bedding soil and backfill on the amount of force arising in the protective coating of the supporting part of the pipeline in the presence of unevenness of the base and its particle size distribution. The results of modeling the contact problem using models of a discrete (granular) medium at the base of the pipeline are presented. The wall thickness of the pipes affects the change in created force in the supporting part of the pipeline (for pipes are 1 420 mm the maximum difference is 22 %). In the presence of unevenness of the base, the force in the supporting part can increase by 3–5 times.